The propagation of single cell performance losses to adjacent cells in a polymer electrolyte fuel cell stack is studied by means of local current density measurements in a two cell stack. In this stack, the working conditions of adjacent cells can be controlled independently in order to deliberately change the performance of one cell (inducing cell) and study the coupling effects to the adjacent cell (response cell), while keeping the working conditions of the later one unchanged. The experiments have shown that changes in the current density distribution caused by lowering of the air stoichiometry in the inducing cell cause changes in the current density distribution of the response cell in the order of 60% of the change of the inducing cell, even when the air stoichiometry of the response cell is kept constant. The losses in cell voltage of the inducing cell cause losses in cell voltage of the response cell in a magnitude between 30 and 50%.
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ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology
May 23–25, 2005
Ypsilanti, Michigan, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-3764-5
PROCEEDINGS PAPER
Experimental Investigation of the Propagation of Local Current Density Variations to Adjacent Cells in PEFC Stacks Available to Purchase
Marco Santis,
Marco Santis
Paul Scherrer Institut, Villigen, Switzerland
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Stefan A. Freunberger,
Stefan A. Freunberger
Paul Scherrer Institut, Villigen, Switzerland
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Matthias Papra,
Matthias Papra
Paul Scherrer Institut, Villigen, Switzerland
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Felix N. Bu¨chi
Felix N. Bu¨chi
Paul Scherrer Institut, Villigen, Switzerland
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Marco Santis
Paul Scherrer Institut, Villigen, Switzerland
Stefan A. Freunberger
Paul Scherrer Institut, Villigen, Switzerland
Matthias Papra
Paul Scherrer Institut, Villigen, Switzerland
Felix N. Bu¨chi
Paul Scherrer Institut, Villigen, Switzerland
Paper No:
FUELCELL2005-74116, pp. 763-765; 3 pages
Published Online:
October 13, 2008
Citation
Santis, M, Freunberger, SA, Papra, M, & Bu¨chi, FN. "Experimental Investigation of the Propagation of Local Current Density Variations to Adjacent Cells in PEFC Stacks." Proceedings of the ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. 3rd International Conference on Fuel Cell Science, Engineering and Technology. Ypsilanti, Michigan, USA. May 23–25, 2005. pp. 763-765. ASME. https://doi.org/10.1115/FUELCELL2005-74116
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